Angle-adjustable ship moon pool drag reduction device

Abstract

The utility model relates to the technical field of ship engineering, in particular to an angle-adjustable ship moon pool drag reduction device. Comprising a ship body, a moon pool, a bottom plate, a first hatch, a hydraulic rod, a baffle, a sliding groove, a mounting plate, a servo motor, a screw rod, a sliding block, a sliding groove and the like. The height of the anti-drag plate can be adjusted, the anti-drag plate is arranged at the key position of water flow, and it is ensured that a ship can keep relatively low sailing resistance under various sea conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship engineering technical field, concretely is a kind of adjustable angle's ship moon pool drag reduction device. BACKGROUND

[0002] The well-shaped structure, which is called moon pool, is usually set in the middle of ship body and penetrates deck to bottom plate for the need of operation on submersible support ship and drilling ship etc.

[0003] The conventional drag reduction device cannot adjust height, so that they can only play a good role in specific water flow height range, cannot make corresponding adjustment according to speed change or different sea conditions, poor flexibility, cannot adapt to multiple working conditions. UTILITY MODEL CONTENT

[0004] The utility model is intended to provide a kind of adjustable angle's ship moon pool drag reduction device to solve the problems presented in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A kind of adjustable angle's ship moon pool drag reduction device, including ship body, the ship body is set with moon pool, the moon pool side wall is connected with bottom plate, the bottom plate is set with first hatch, the ship body is connected with hydraulic rod, the hydraulic rod telescopic end is connected with baffle, the ship body and bottom plate are jointly set with sliding slot, the baffle and sliding slot are slidably connected, the baffle and first hatch are mutually matched, the moon pool side wall is connected with mounting plate, the mounting plate is connected with servo motor, the servo motor output end is connected with screw rod, the screw rod is rotatably connected with mounting plate, the screw rod is movably connected with sliding block, the mounting plate is set with sliding slot, the sliding block and sliding slot are slidably connected, the sliding block is connected with vertical plate, the vertical plate is rotatably connected with rotating shaft, the rotating shaft is connected with drag reduction plate, the sliding block is connected with connecting block, the rotating shaft and connecting block are rotatably connected.

[0007] Preferably, the rotating shaft is connected with worm gear, the connecting block is rotatably connected with worm, the worm gear and worm are mutually engaged, the connecting block is connected with step motor, the step motor output end is connected with worm.

[0008] Preferably, the connecting block is connected with isolation shell.

[0009] Preferably, the bottom plate is provided with a receiving groove, the side wall of the receiving groove is connected with a driving motor, the output end of the driving motor is connected with a threaded rod, the threaded rod is rotationally connected with the receiving groove, the threaded rod is threadedly connected with a sealing door, the sealing door is slidingly connected with the receiving groove, and the bottom plate is provided with a second hatch.

[0010] Preferably, the mounting plate is connected with a protective shell.

[0011] Compared with the prior art, the technical scheme has the beneficial effects that:

[0012] (1) The height of the drag reduction plate can be adjusted by setting the mounting plate, servo motor, screw rod, sliding block and sliding groove, etc., and the drag reduction plate can be placed at a key position of the water flow. When the water flow is turbulent and chaotic during high-speed navigation, the height of the drag reduction plate can be adjusted to guide the water flow to pass through the moon pool more smoothly, reduce the collision and vortex between the water flow and the moon pool wall, greatly reduce the water flow resistance, and improve the navigation efficiency of the ship. In the face of complex and variable sea conditions, such as when the sea waves are lifted, the height of the drag reduction plate is increased to better block and guide abnormal water flow, avoid the strong impact of the water flow on the internal structure of the moon pool, reduce the increase of resistance caused by bad sea conditions, and ensure that the ship can maintain relatively low navigation resistance under various sea conditions. Realize efficient drag reduction, flexible adaptation to different needs, and always maintain good adaptation to the ship's navigation state to ensure the ship's navigation performance under various dynamic changes.

[0013] (2) By setting the worm gear, worm and stepper motor, extremely precise angle control can be provided, so that the drag reduction plate can be adjusted in real time and accurately to the angle that best matches the direction of the water flow, ensuring that the drag reduction plate can always effectively guide the water flow and reduce the resistance of the water flow to the ship, thereby improving the navigation efficiency of the ship. And because of the self-locking property of the worm gear and worm, the drag reduction plate can always remain at the set angle position, continuously and stably exerting the drag reduction effect, ensuring that the ship can maintain reliable drag reduction effect in various harsh environments.

[0014] (3) By setting the isolation shell and the protective shell, a solid protective barrier is built for the stepper motor and the servo motor, which can effectively block the water flow from entering the motor, so that the motor can work in a dry and clean environment, greatly reducing the equipment failure caused by corrosion, effectively avoiding the occurrence of electrical short circuit, ensuring the stable operation of the motor, further prolonging its service life, and reducing the frequency of equipment replacement and maintenance.

[0015] (4) By setting the accommodation groove, drive motor, threaded rod, sealing door and second hatch and other structures, can form a good waterproof sealing effect when closed, to protect the overall stability and safety of the ship, to provide a safe operating environment for the equipment in the moon pool, reduce the risk of equipment failure, to ensure the smooth progress of the ship related operations. And make the second hatch opening and closing operation simple and efficient, greatly saving the time of equipment put and recovery, improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view of the utility model;

[0017] Figure 2 is a top view of the connecting block of the utility model;

[0018] Reference signs: hull 1, moon pool 2, protective shell 3, servo motor 4, mounting plate 5, screw rod 6, sliding groove 7, sliding block 8, hydraulic rod 9, sliding slot 10, baffle 11, first hatch 12, second hatch 13, sealing door 14, accommodation groove 15, threaded rod 16, drive motor 17, connecting block 18, rotating shaft 19, drag reduction plate 20, vertical plate 21, bottom plate 22, worm wheel 23, worm 24, stepper motor 25, isolation shell 26. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings and embodiments:

[0020] For example, Figures 1-2The adjustable angle ship moon pool drag reduction device shown, including the ship body 1, the ship body 1 is provided with a moon pool 2, the moon pool 2 side wall bottom is connected with the bottom plate 22, the bottom plate 22 both ends are respectively provided with the first hatch 12, the ship body 1 both ends are respectively connected with the hydraulic rod 9, two hydraulic rods 9 telescopic end are respectively connected with the baffle 11, the ship body 1 and the bottom plate 22 both ends are respectively provided with the sliding groove 10, two baffles 11 are respectively connected with two sliding grooves 10, two baffles 11 are respectively matched with two first hatches 12, by the extension of the hydraulic rod 9, the telescopic end drives the baffle 11 to slide along the sliding groove 10, until the baffle 11 contacts the sliding groove 10 farthest from itself, at this time the baffle 11 and the sliding groove 10 perfectly fit, realize the tight closure of the first hatch 12, effectively prevent seawater from pouring into the moon pool 2 under certain conditions, ensure the stable operation of the moon pool 2 internal equipment and ship structure. The moon pool 2 both ends side wall is connected with the mounting plate 5, two mounting plates 5 top are respectively connected with the servo motor 4, two servo motors 4 output ends are respectively connected with the screw rod 6, two screw rods 6 are respectively connected with the corresponding mounting plate 5, two screw rods 6 outer walls are respectively connected with the sliding block 8, two mounting plates 5 are respectively provided with the sliding groove 7, two sliding blocks 8 are respectively connected with the corresponding sliding groove 7, two sliding blocks 8 bottoms are respectively connected with the vertical plate 21, two vertical plates 21 are respectively connected with the rotating shaft 19, two rotating shafts 19 outer walls are connected with the drag reduction plate 20, two drag reduction plates 20 are respectively located above the corresponding first hatch 12, two sliding blocks 8 bottoms away from the vertical plate 21 one end are respectively connected with the connecting block 18, two rotating shafts 19 are respectively connected with the corresponding connecting block 18. Start the servo motor 4, so that the output end drives the screw rod 6 to rotate at a very high speed and accurate torque. Because the screw rod 6 and the corresponding mounting plate 5 are connected in a rotating manner, which ensures the stability and reliability of the screw rod 6 during high-speed rotation. With the rotation of the screw rod 6, the sliding block 8 movably connected with the outer wall starts to move linearly along the thread track of the screw rod 6. The sliding block 8 and the sliding groove 7 are closely matched to realize smooth sliding. This sliding mode not only ensures the accuracy of the drag reduction plate 20 during height adjustment, but also can effectively withstand the lateral force from the water flow.

[0021] As Figure 2As shown, the end of the rotating shaft 19 away from the vertical plate 21 is connected with a worm wheel 23, the worm wheel 23 is located inside the connecting block 18, the inner wall of the connecting block 18 is rotationally connected with a worm 24, the worm wheel 23 and the worm 24 are meshed with each other, the outer wall of the connecting block 18 is connected with a step motor 25, the output end of the step motor 25 is connected with the worm 24. The step motor 25 can drive the worm 24 to rotate extremely accurately by virtue of its high-precision step angle control capability. The rotation of the worm 24 is transmitted through the meshing of the worm wheel 23 and the worm 24, and the rotary motion is converted into the precise rotation of the worm wheel 23, thereby driving the rotating shaft 19 and the drag reduction plate 20 to make a small and accurate angle adjustment. The outer wall of the connecting block 18 is connected with an isolation shell 26, the isolation shell 26 tightly covers the step motor 25, forming a solid protective barrier. It can effectively block the intrusion of seawater and prevent salt and other impurities from causing corrosion and damage to the winding, bearing and other precision components of the step motor 25. At the same time, it can also resist the vibration, impact and other external factors caused by ship navigation, ensuring that the step motor 25 works in a dry and stable environment and always maintains its high-precision control performance.

[0022] As shown in the drawings, Figure 1 As shown, the bottom plate 22 is provided with a receiving groove 15, the side wall of the receiving groove 15 is connected with a drive motor 17, the output end of the drive motor 17 is connected with a threaded rod 16, the threaded rod 16 is rotationally connected with the receiving groove 15, the outer wall of the threaded rod 16 is threadedly connected with a sealing door 14, the sealing door 14 is slidingly connected with the receiving groove 15, the bottom plate 22 is provided with a second hatch 13, and the sealing door 14 cooperates with the second hatch 13. The outer wall of the mounting plate 5 is connected with a protective shell 3, which covers the servo motor 4. When the drive motor 17 is started, its output end drives the threaded rod 16 connected thereto to rotate. Since the threaded rod 16 and the receiving groove 15 are rotationally connected, the stability of the rotation process is ensured. The outer wall of the threaded rod 16 is threadedly connected with the sealing door 14, and as the threaded rod 16 rotates, the sealing door 14 accurately slides along the receiving groove 15. The second hatch 13 provided on the bottom plate 22 closely cooperates with the sealing door 14. When the ship needs to perform a specific operation, such as the launching and recovery of underwater equipment, the drive motor 17 is reversed to drive the sealing door 14 to slide into the receiving groove 15, thereby opening the second hatch 13 to provide a passage for the equipment to enter and exit; after the operation is completed, the drive motor 17 is turned on to make the sealing door 14 slide out of the receiving groove 15, tightly closing the second hatch 13, effectively preventing seawater from entering the moon pool 2, ensuring the stability of the internal environment of the moon pool 2, and also avoiding the entry of sundries into the moon pool 2 to affect the equipment therein.

[0023] The specific implementation process is as follows:

[0024] When the ship encounters specific working conditions, such as severe sea conditions and seawater backflow prevention, the hydraulic rod 9 at both ends of the ship body 1 is extended to push the baffle 11 along the sliding groove 10 to the farthest end to tightly close the first hatch 12. When it needs to be opened, the hydraulic rod 9 is retracted to make the baffle 11 retreat, at this time, seawater flows into the moon pool 2, at this time, the servo motor 4 is started to drive the screw rod 6 to rotate, and the sliding block 8 is moved, guided by the sliding groove 7, and the height of the drag reduction plate 20 is adjusted to adapt to the water flow condition of different water depths. When the angle of the drag reduction plate 20 needs to be adjusted, the step motor 25 on the outer wall of the connecting block 18 drives the worm 24 to rotate, and the worm 24 is engaged with the worm wheel 23 to convert the rotary motion into the rotation of the worm wheel 23, and the rotating shaft 19 and the drag reduction plate 20 are adjusted by a small and accurate angle to match the water flow direction. The step motor 25 is protected by the isolation shell 26 to resist seawater erosion and external interference.

[0025] When the underwater equipment needs to be launched or recovered, the drive motor 17 of the storage groove 15 is reversed, the threaded rod 16 is rotated to drive the sealing door 14 to slide into the groove, and the second hatch 13 is opened. After the operation is completed, the drive motor 17 is reversed, the sealing door 14 slides out to close the second hatch 13, so that seawater and sundries cannot enter. During the period, the protective shell 3 protects the servo motor 4 to ensure its stable operation.

[0026] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. An adjustable-angle ship moonpool drag reduction device, characterized in that: The vessel includes a hull (1), which has a moon pool (2). A bottom plate (22) is connected to the side wall of the moon pool (2). A first hatch (12) is opened on the bottom plate (22). A hydraulic rod (9) is connected to the hull (1). A baffle (11) is connected to the telescopic end of the hydraulic rod (9). A sliding groove (10) is opened on both the hull (1) and the bottom plate (22). The baffle (11) is slidably connected to the sliding groove (10). The baffle (11) cooperates with the first hatch (12). An mounting plate (5) is connected to the side wall of the moon pool (2). A servo is connected to the mounting plate (5). The servo motor (4) has a screw (6) connected to its output end. The screw (6) is rotatably connected to the mounting plate (5). The screw (6) is movably connected to a sliding block (8). The mounting plate (5) has a sliding groove (7). The sliding block (8) is slidably connected to the sliding groove (7). The sliding block (8) is connected to a vertical plate (21). The vertical plate (21) is rotatably connected to a rotating shaft (19). The rotating shaft (19) is connected to a drag-reducing plate (20). The sliding block (8) is connected to a connecting block (18). The rotating shaft (19) is rotatably connected to the connecting block (18).

2. The adjustable-angle ship moonpool drag reduction device as described in claim 1, characterized in that: The rotating shaft (19) is connected to a worm gear (23), and the connecting block (18) is rotatably connected to a worm (24). The worm gear (23) and the worm (24) mesh with each other. The connecting block (18) is connected to a stepper motor (25), and the output end of the stepper motor (25) is connected to the worm (24).

3. The adjustable-angle ship moonpool drag reduction device as described in claim 2, characterized in that: The connecting block (18) is connected to the isolation shell (26).

4. The adjustable-angle ship moonpool drag reduction device as described in claim 1, characterized in that: The bottom plate (22) has a storage slot (15), and a drive motor (17) is connected to the side wall of the storage slot (15). The output end of the drive motor (17) is connected to a threaded rod (16), which is rotatably connected to the storage slot (15). The threaded rod (16) is threadedly connected to a sealing door (14), which is slidably connected to the storage slot (15). The bottom plate (22) has a second hatch (13), which cooperates with the sealing door (14) and the second hatch (13).

5. The adjustable-angle ship moonpool drag reduction device as described in claim 1, characterized in that: The mounting plate (5) is connected to a protective shell (3).

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